Schumer, who is heavily favored to win a fourth six-year term on Nov. 8, also is expected to be elected by Senate Democrats later this year as their party leader in the next Congress.

Democrats are in the minority in the U.S. Senate but could win a majority in November.

Schumer's televised debate with Long will be broadcast statewide by Time Warner Cable News, NY1 and TWC News at 8 p.m. Oct. 30 from Union College in Schenectady. The moderators will be Time Warner Cable's political anchors Errol Louis and Liz Benjamin.

For Long, a Manhattan attorney, this is her second race for U.S. Senate against a heavily favored incumbent Democrat. She lost to Sen. Kirsten Gillibrand in 2012. In that race, Gillibrand also agreed to only one debate, which was held at Skidmore College.

Long is also running on the Conservative and Reform Party ballot lines.

The debate will not include minor-party candidates Robin Wilson, who is running on the Green Party line, or Alex Merced, the Libertarian Party candidate.

Schumer is on the ballot on the Democratic, Working Families, Independence and Women's Equality lines.

Long said in a statement Tuesday she also has agreed to debate Schumer at Canisius College in Buffalo and would like to debate him in the Southern Tier, in the Bronx and on Long Island.

Matt House, a spokesman for Schumer's campaign, did not respond to questions about the possible other debate locations.

"We are looking forward to the debate, which will be broadcast statewide so that all New Yorkers will have a chance to hear both candidates' visions for the state, and the country,'' House said in a statement.